//
// Program name:  addargs
// Author:  B. Massingill 
//
// Purpose:  add command-line arguments.
//
// Input:  
//   command-line arguments (assumed to be numeric, possibly
//     floating-point).
// Output:  
//   sum of command-line argument.
//
#include <iostream>
#include <cstdlib>		// has atof(), EXIT_SUCCESS,
				//   EXIT_FAILURE, exit()
using namespace std;

int main(int argc, char *argv[])
{
  if (argc <= 1)
    {
      cout << "Usage:  " << argv[0] << " value1 value2... \n";
      exit(EXIT_FAILURE);	// bail out
    }

  double sum = 0.0;

  for(int i = 1; i < argc; ++i)
    sum += atof(argv[i]);

  cout << "Sum: " << sum << endl;

  return EXIT_SUCCESS;
}